Porro Prism Pair for Binocular Optics
Pair of mounted Porro prisms that provide upright image in binocular telescopes by folding the optical path. Classified under HTS 9002.90.20.00 as essential mounted optical elements for binocular instruments. The mounting aligns precisely within the binocular housing.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If when assembled into complete binocular instrument
Finished binoculars containing prisms classify as complete optical instruments in 9005.
If imported without mounting or instrument designation
Lacks 'mounted for instruments' criterion, defaults to unworked optical elements.
If military-grade prisms for telescopic sights
Telescopic sights excluded from 9005 by chapter note, classify in 9013.
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Import Tips & Compliance
• Specify binocular model compatibility to prove instrument-specific use
• Phase retardation coatings must be documented for optical performance claims
• Import as sets when paired to avoid single prism scrutiny
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